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NEET levelSingle correct optionDifficulty 1 of 3pb011

Aluminium oxide is described as amphoteric because it

Adoes not react with either acids or alkalis
Breacts with both aqueous acids and aqueous alkalis to form salts
Creacts only with acids
Dreacts only with alkalis

Answer: B

Al X_{2} O X_{3}

gives

Al X^{3 +}

salts with acids and aluminate

[Al (OH) X_{4}] X^{-}

with alkalis, so it shows both acidic and basic behaviour.

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